Centrifugal creamer.



Patented Feb. l3, I900.

0. ANDERSON. DENTRIFUGAL CREAMER.

(Application filed Aug. 29, 1895.)

2 Sheets-Sheet "1.

(No Model.)

WITNESSES m-swmmwmwmmm; mvEuTnm ATTORNEY;

THE uonms Pzrcns co. PHOTO-LITHOY WASMNGYON, a r2 m. 643,2I8.- Patented Feb. i3, l9010. 0. ANDEBSDN.

CENTRIFUGAL GREAMER.

. (Application filed. Aug. 29, 1895.)

(Nd Model.) m g, d 2 Sheets-Sheei 2-,.

WITNESSES:

ATTORNEYS.

b with PATENT FFICE.

OSCAR ANDERSON, OF NEl/VARK, NEW JERSEY, ASSIGNOR TO THE NATIONAL DAIRY MACHINE COMPANY, OF NEW JERSEY.

CENTRIFUGAL CREAMER.

SPECIFICATION forming part of Letters Patent No. 643,218, dated February 13, 1900. Application filed August 29, 1895. Serial No. 560,890. (No model.)

To all whom it may concern:

Be itknown that I, OSCAR ANDERSON, a citizen of the United States, residing at Newark, in the county of Essex and State of New J ersey, have invented certain new and useful Improvements in Centrifugal Oreamers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

I5 This invention relates to that class of centrifugal cream-separators represented by the one shown in my prior application, filed June 16, 1894, No. 514,718, the objects of the present improvements being to simplify the construction, to render the cleaning of the interior creaming apparatus more convenient and easy, to secure a greater output of cream in proportion to the power consumed in giving rotarymotion to the device, to the complexity of arrangement of the parts and to the convenience with which said parts may be cleansed, and to secure other advantages and .results, some of which may be referred to hereinafter in connection with the description of 0 the working parts.

The invention consists in the improved centrifugal separator and in the arrangements and combinations of parts, all substantially as will be hereinafter set forth, and finally 3 5 embraced in the clauses of the claim.

Referring to the accompanying drawings, in which like letters of reference indicate corresponding parts in each of the views, Figure 1 is a central vertical section of a creaming or skimming frame adapted to be inserted within the bowl. Fig. 2 is a side elevation, partly broken away to disclose the construction between certain plates and showing a modified construction of said frame;

and Figs. 3 and 4 are horizontal sections taken,

respectively, on linesa: and a Fig. 5 is a central vertical section of the bowl and the said creaming-frame and cooperatin g parts, showing the positions of the same when in operative relation; and Fig. 6 is a horizontal section of the same on line 2. Figs. 7 and 8 are detail elevations illustrating the construction of a certain cream-screw and its bearings.

In said drawings, a indicates the rotary bowl seated upon a shaft b, by means of which 5 5 latter rotary power is transmitted to said how], said shaft being operated by any of the means common in the art, and c is a cover for the bowl, provided at the center with an opening d for the duct e for the new milk. At one side of said central opening the cover is provided with a blue-milk exit tube or duct f, which has an interior opening to receive the blue milk near the periphery of the bowl. Within said bowl is arranged a frame consisting of a series or collection of. bent plates 9 g 9. These are disposed Vertically within the bowl and at their lateral edges are turned inwardly, the parts g extending toward the center of the bowl. The outer parts g of said plates are curved to conform more or less closely to the concaved inner wall of the bowl, and the converging parts 9 of each plate form near the center of the bowl, where the creamwall stands during the creaming operations, a vertical mouth or opening h, through which the cream separated from new milk lying in the chamber it passes to said cream-wall. The parts g of the adjacent plates lie separate and apart from one another, as indicated in Figs. 3, 4, and 6, and form radial passages g', which extend from the outer part of the main chamber within the bowl to a point near the center or close to the cream-wall location. The said passages are of sufficient size to allow a cleaning-tool to enter between from the outside of the frame. I prefer that these passages to the cream-wall shall lie at about everythird of the circumference of the frame, so that the cream adhering to the outer sides of the bent plates shall not be compelled to flow a much greater distance than one-third of the circumference of the frame. Th us said cream will be prevented from becoming churned or rendered unduly free of the milk or other- 5 wise rendered difficult of proper manipulation in subsequent dairy operations. Around said bent plates is secured a spiral band j, which is of a width closely approximating the space formed between the outer sides or backs g of the bent plates and the interior wall of the bowl, the said spiral forming a spiral chamber Z, which extends from the bottom of the bowl to the top thereof, so as to convey the blue milk spirally from one end of the bowl to the other. These chambers may be and in the case illustrated in Fig. 2 are subdivided by thin and short transverse spiral plates or partitions j, which extend only from one passage 9" to the next in order. These short plates, projections, or partitions are arranged in spiral series and would serve, independent of the continuous spiral partition, to give a spiral course to the fluid around the bowl, so that the distance traveled by the milk in thin layers, small divisions, or in a body out up by the numerous projections is relatively large. Should the cream after collecting on the outer walls of the frame or plates 9 be compelled to travel the full spiral course of the blue milk, it would tend to become unduly thick, and to some extent the globules would be broken or churned, and as a result the cream would be given an oily appearance, deemed objectionable in the market, and to avoid this I provide inthe spiral course of the blue milk frequent openings, both between the partitions or projections and to the cream-wall of the bowl, so that the cream after gathering on the frame can flow inward tothe cream-wall without makingcontinuous circuits of the frame- 9' or without making a long flow from near the bottom to near thetop of the bowl, as willbe understood, and thus the cream is led to the cream-wall in a smooth and yet not oily condition. continuous spiral partitions j are supplemented by passage-partitions 9, (shown clearly in Figs. 2, 3, and 4,) by which the bluemilk is prevented from making a short vertical passage across the inner edge of the leading out from the main duct 6.

and in said duct is subjected to sufficient centrifugal force, due to the rotation of said tube, to cause an immediate outflow throughthe spouts or ducts e.

In operation the milk enters the separate chambers h h h and in separate streams flows vertically in said chambers or flows in lines At the parallel with the axis of the bowl. same time the cream particles in the milk that are easy of separation flow inward to the cream-Wall, theseparation being facilitated by the inwardly-extending sides g g of the chambers. Arriving at the end of the bowl,

the-milk, deprived of the cream particles easy of separation, flows outward through passages 70, Fig. 5,into the peripheral spiral blue-milk chamber 1 and again takes a vertical course, which is indirect, however, and is of considerable length because of its spiral shape. Be-

cause of its relative length the blue milk isbrought into contact with a large area of surface'while subjected to the maximum centrifu- At the said passages g the:

gal force, and thus the cream particles remaining in the blue milk and which are small and difficult of separating are more thoroughly separated and led to the cream-wall through the passages 9 between the plates. Arriving at the end of its course, which end is ordinarily at the end ofthe bowl at which the new milk enters, the blue milk makes a final exit through ductf, as usual.

The frame is removable from the bowl as a unit in the construction preferred to facilitate cleansing, and because the passages and chambers open directly from the outside and are of sufficient size to allow an easy insertion of cleansing-tools the cleansing operations are performed with facility and convenience.

The cream issues from the bowl at the creamoutlet duct m, Fig. 5. This duct may be adjusted to govern the outflow of cream and regulate the positionof the cream-wall in any suitable manner; but the construct-ionIpre fer is shown in Figs. 5, 7, and 8, where said duct is shown to comprise a short tube m, fastened to the cover longitudinally-in line with the desired cream-wall withinthe bowl.

The said tube in the construction shown is closed at its lower or inner end, and the outflow of the cream is secured by forming at one side of the tube-the side toward the bowl center-a -shaped opening'm, which flares or enlarges toward the center of the bowl.

Said tube is interiorly threaded and receives the screw m, which in the construction shown, particularly in Fig. 8, has a central outlet-passagem Byturningthe'screwm ,downward from the position shown, for example, in Fig. '7 the point of the angle formed by the end of the screw and the inclined side of the notch m is changed in position,being thrown toward the center of the bowl,,as will be understood, and thus the relation of the cream-outflow opening is changed in its-relation to the fixed outflow-openings for the blue milk, and the proportionate outfiow'of cream and blue milk are likewise proportionately changed, the throwing of the angle inward toward the center of the bowl increasing the outflow of blue milk through the blue-milk outlet and diminishing the flow through the cream-exit, the diminishing flow of cream tending, to give increased thickness to the cream, as will be understood by one skilled inthe art.

Having. thus described the invention, what I claim as new is- 1. In a centrifugal creamer, the combination with the bowl adapted to be rotated, of

. a frame comprising vertical plates the oppotionwith the bowl adapted to be rotated, of

a frame comprising a series of vertical plates separate and apart from one another and havmg passages between leading to the central part of the bowl, and spiral partitions supplemented by partitions 9 extending into said passages, substantially as set forth.

3. In a centrifugal creamer, the combination with the bowl adapted to be rotated, of a frame consisting of a series of bent plates having backs lyingclosely adjacent to the inner wall of said bowl and sides extending toward the center of the bowl and forming chambers 7L, and partitions j, j, lying .in the space formed between said inner wall and said backs andallowing a movement of the fluid around the outer side of said frame as said fluid gradually moves upward, substantially as set forth.

4-. In a centrifugal creamer, the combination with the bowl adapted to be rotated, of a frame consisting of a series of bent plates having a continuous spiral partition and intermediate short partitions at the backs thereof, substantially as set forth.

5. In a centrifugal creamer the combination with the bowl, of a fixed tube arranged near the center of said bowl at the cream outlet or exit and having a transverse lateral opening with an inclined lower side, and a cream-regulating screw within said tube and adapted to cooperate with said inclined lower side of the lateral opening to vary the'outer limit of said opening with reference to the center of the bowl, substantially as set forth.

6. In a centrifugal creamer, the combination with the rotary bowl, of an annular series of vertically-disposed partitions joined and forming a frame, each of said partitions being bent to form, interiorly, vertical chambers h, h, for new milk and passages between said chambers for the cream, means at one end of said chambers for supplying the same with new milk, and for conducting the liquid partly devoid of the lighter particles, from saidchambers h, to the space between the said partitions and inner wall of the bowl, and partitions arranged in said space and giving to the said liquid partly devoid of lighter particles a movement across the passage formed between the partitions, as said liquid moves upward, substantially as set forth.

7. In a centrifugal creamer, the combination with the rotary bowl, of a frame cylindrical in general outline and having numerous passages therethrough for the cream to enter to the cream-wall from the outer space, and projecting protuberances formed on the outer side of said frame in spiral series, the continuity of which protuberances is broken or interrupted to allow an upflow of fluid between, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 5th day of August, 1895.

OSCAR ANDERSON.

\Vitnesses: Y

CHARLES H. PELL, O. B. PITNEY. 

